![]() ![]() Debug issues – If queries are not working as expected, comparing the actual schema vs.Understand the database structure – By seeing which tables exist and their columns/types, you better understand how the database is organized.There are a few key benefits to taking the time to explore table schemas using SQLite Show Tables: Benefits of Exploring Schemas with SQLite Show Tables We can see the column names, types, and constraints for the posts table. schema postsĪnd get column details using PRAGMA: sqlite> PRAGMA table_info(posts) tablesĬheck the schema for the posts table: sqlite>. ![]() Let’s look at examples of using these SQLite Show Tables commands in a sample database.įirst, create a simple database with two tables using SQLite statements: CREATE TABLE users ( tables command, and exits.Īlso read: SQLite Commands – A Comprehensive Guide Examples of SQLite Show Tables This will start the interactive shell and allow you to enter commands.Īlternatively, you can execute SQL statements directly using sqlite3: $ sqlite3 database.db ".tables" To use these SQLite show table commands, you first need to open a connection to a database using the sqlite3 command line program: $ sqlite3 database.dbĮnter SQL statements terminated with a " " pk – 1 if column is part of the primary key.notnull – 1 if column has a NOT NULL constraint.type – Data type (TEXT, INTEGER, DATE, etc).This will return rows containing the column name, data type, whether NULL is allowed, and other properties of each column in a table: PRAGMA table_info(posts) cid|name|type|notnull|dflt_value|pk Get Column Details with PRAGMA table_info()įor even more detailed information on a table’s columns, you can query the sqlite_master database using PRAGMA table_info(). This provides useful insight into the columns, data types, constraints, and indexes that make up a table. This will display the CREATE TABLE statement used to generate the table. To see the schema of a table, you need to use the. View CREATE Statement with SQLite Show Tables. The % wildcard allows matching any number of trailing characters. This example would match all tables starting with “post”. You can also filter the list only to show tables matching a specified pattern using. tables sqlite_master which will filter system views. This will output a list of all table and view names in the current database: usersīy default. The most straightforward to use SQLite Show Tables to display tables from a database is using the. List All Tables using SQLite Show Tables. Let’s look at each of these in more depth, along with examples. Show detailed information on a table’s columns List names of all tables and views in the databaseĭisplay CREATE statement used to generate a table The main commands for showing tables and schemas in SQLite are: Command Advanced Techniques for Using SQLite Show Tables.Benefits of Exploring Schemas with SQLite Show Tables.Open a Connection to an SQLite Database.In this tutorial, you have learned how to show the structure of a table in SQLite via a command-line shell program or SQL statement. WHERE name = 'albums' Code language: SQL (Structured Query Language) ( sql )Ĭode language: SQL (Structured Query Language) ( sql ) You can find the structure of a table by querying it from the sqlite_schema table as follows: SELECT sql FROM sqlite_schema The following picture shows the output: cid name type notnull dflt_value pkĢ ArtistId INTEGER 1 0 Getting the structure of a table using the SQL statement mode column Code language: SQL (Structured Query Language) ( sql )Īnd use the PRAGMA command as follows: pragma table_info( 'albums') Code language: JavaScript ( javascript ) To do it, you use the following command to format the output. INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,įOREIGN KEY () REFERENCES "artists" ()ĬREATE INDEX ON "albums" () Code language: SQL (Structured Query Language) ( sql )Īnother way to show the structure of a table is to use the PRAGMA command. Here is the output: CREATE TABLE IF NOT EXISTS "albums" schema will consider the albums as the table name and returns nothing because the table albums does not exist. Notice that there is no semicolon ( ) after the table name. schema albums Code language: SQL (Structured Query Language) ( sql ) schema table_name Code language: SQL (Structured Query Language) ( sql )įor example, the following command shows the statement that created the albums table. To find out the structure of a table via the SQLite command-line shell program, you follow these steps:įirst, connect to a database via the SQLite command-line shell program: sqlite3 c:\sqlite\db\chinook.db Code language: SQL (Structured Query Language) ( sql ) Getting the structure of a table via the SQLite command-line shell program Summary: in this tutorial, you will learn about various ways to show the structure of a table in SQLite. ![]()
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